oracle 12c新功能 recover table恢复单个表

简介: 不支持sys用户和system表空间的表

限制条件

不支持sys用户和system表空间的表


RMAN-05063: Cannot recover specified tables
RMAN-05056: Table SYS.TB belongs to SYS
RMAN-05056: Table SYS.TA belongs to SYS

恢复过程

RMAN>  create table scutech.ta as select object_id from dba_objects;
Statement processed
RMAN> select current_scn from v$database;
CURRENT_SCN
-----------
    3647348
RMAN>  recover table scutech.ta of pluggable database orcl until scn 3647348 AUXILIARY DESTINATION '/u01/recover'  REMAP TABLE scutech.ta:tb;
Starting recover at 21-SEP-20
current log archived
using channel ORA_DISK_1
RMAN-05026: warning: presuming following set of tablespaces applies to specified point-in-time
List of tablespaces expected to have UNDO segments
Tablespace SYSTEM
Tablespace ORCL:SYSTEM
Tablespace UNDOTBS2
Tablespace ORCL:UNDOTBS2
Creating automatic instance, with SID='bmDF'
initialization parameters used for automatic instance:
db_name=ORCLCDB
db_unique_name=bmDF_pitr_orcl_ORCLCDB
compatible=19.0.0
db_block_size=8192
db_files=200
diagnostic_dest=/u01/app/oracle
_system_trig_enabled=FALSE
sga_target=800M
processes=200
db_create_file_dest=/u01/recover
log_archive_dest_1='location=/u01/recover'
enable_pluggable_database=true
_clone_one_pdb_recovery=true
max_string_size=EXTENDED
#No auxiliary parameter file used
starting up automatic instance ORCLCDB
Oracle instance started
Total System Global Area     838858664 bytes
Fixed Size                     9140136 bytes
Variable Size                243269632 bytes
Database Buffers             578813952 bytes
Redo Buffers                   7634944 bytes
Automatic instance created
contents of Memory Script:
{
# set requested point in time
set until  scn 3647348;
# restore the controlfile
restore clone controlfile;
# mount the controlfile
sql clone 'alter database mount clone database';
# archive current online log 
sql 'alter system archive log current';
}
executing Memory Script
executing command: SET until clause
Starting restore at 21-SEP-20
allocated channel: ORA_AUX_DISK_1
channel ORA_AUX_DISK_1: SID=169 device type=DISK
channel ORA_AUX_DISK_1: starting datafile backup set restore
channel ORA_AUX_DISK_1: restoring control file
channel ORA_AUX_DISK_1: reading from backup piece /u01/app/oracle/fast_recovery_area/ORCLCDB/autobackup/2020_09_21/o1_mf_s_1051676625_hpjrrlnv_.bkp
channel ORA_AUX_DISK_1: piece handle=/u01/app/oracle/fast_recovery_area/ORCLCDB/autobackup/2020_09_21/o1_mf_s_1051676625_hpjrrlnv_.bkp tag=TAG20200921T042345
channel ORA_AUX_DISK_1: restored backup piece 1
channel ORA_AUX_DISK_1: restore complete, elapsed time: 00:00:01
output file name=/u01/recover/ORCLCDB/controlfile/o1_mf_hpjsj4g3_.ctl
Finished restore at 21-SEP-20
sql statement: alter database mount clone database
sql statement: alter system archive log current
contents of Memory Script:
{
# set requested point in time
set until  scn 3647348;
# set destinations for recovery set and auxiliary set datafiles
set newname for clone datafile  1 to new;
set newname for clone datafile  9 to new;
set newname for clone datafile  14 to new;
set newname for clone datafile  15 to new;
set newname for clone datafile  3 to new;
set newname for clone datafile  10 to new;
set newname for clone tempfile  1 to new;
set newname for clone tempfile  3 to new;
# switch all tempfiles
switch clone tempfile all;
# restore the tablespaces in the recovery set and the auxiliary set
restore clone datafile  1, 9, 14, 15, 3, 10;
switch clone datafile all;
}
executing Memory Script
executing command: SET until clause
executing command: SET NEWNAME
executing command: SET NEWNAME
executing command: SET NEWNAME
executing command: SET NEWNAME
executing command: SET NEWNAME
executing command: SET NEWNAME
executing command: SET NEWNAME
executing command: SET NEWNAME
renamed tempfile 1 to /u01/recover/ORCLCDB/datafile/o1_mf_temp_%u_.tmp in control file
renamed tempfile 3 to /u01/recover/ORCLCDB/8A34DEF16CD55C76E0530100007F040C/datafile/o1_mf_temp_%u_.tmp in control file
Starting restore at 21-SEP-20
using channel ORA_AUX_DISK_1
channel ORA_AUX_DISK_1: starting datafile backup set restore
channel ORA_AUX_DISK_1: specifying datafile(s) to restore from backup set
channel ORA_AUX_DISK_1: restoring datafile 00009 to /u01/recover/ORCLCDB/8A34DEF16CD55C76E0530100007F040C/datafile/o1_mf_system_%u_.dbf
channel ORA_AUX_DISK_1: restoring datafile 00015 to /u01/recover/ORCLCDB/8A34DEF16CD55C76E0530100007F040C/datafile/o1_mf_undotbs2_%u_.dbf
channel ORA_AUX_DISK_1: restoring datafile 00010 to /u01/recover/ORCLCDB/8A34DEF16CD55C76E0530100007F040C/datafile/o1_mf_sysaux_%u_.dbf
channel ORA_AUX_DISK_1: reading from backup piece /u01/app/oracle/fast_recovery_area/ORCLCDB/8A34DEF16CD55C76E0530100007F040C/backupset/2020_09_21/o1_mf_nnndf_TAG20200921T042229_hpjrp65m_.bkp
channel ORA_AUX_DISK_1: piece handle=/u01/app/oracle/fast_recovery_area/ORCLCDB/8A34DEF16CD55C76E0530100007F040C/backupset/2020_09_21/o1_mf_nnndf_TAG20200921T042229_hpjrp65m_.bkp tag=TAG20200921T042229
channel ORA_AUX_DISK_1: restored backup piece 1
channel ORA_AUX_DISK_1: restore complete, elapsed time: 00:00:25
channel ORA_AUX_DISK_1: starting datafile backup set restore
channel ORA_AUX_DISK_1: specifying datafile(s) to restore from backup set
channel ORA_AUX_DISK_1: restoring datafile 00001 to /u01/recover/ORCLCDB/datafile/o1_mf_system_%u_.dbf
channel ORA_AUX_DISK_1: restoring datafile 00014 to /u01/recover/ORCLCDB/datafile/o1_mf_undotbs2_%u_.dbf
channel ORA_AUX_DISK_1: restoring datafile 00003 to /u01/recover/ORCLCDB/datafile/o1_mf_sysaux_%u_.dbf
channel ORA_AUX_DISK_1: reading from backup piece /u01/app/oracle/fast_recovery_area/ORCLCDB/backupset/2020_09_21/o1_mf_nnndf_TAG20200921T042229_hpjrq9df_.bkp
channel ORA_AUX_DISK_1: piece handle=/u01/app/oracle/fast_recovery_area/ORCLCDB/backupset/2020_09_21/o1_mf_nnndf_TAG20200921T042229_hpjrq9df_.bkp tag=TAG20200921T042229
channel ORA_AUX_DISK_1: restored backup piece 1
channel ORA_AUX_DISK_1: restore complete, elapsed time: 00:00:25
Finished restore at 21-SEP-20
datafile 1 switched to datafile copy
input datafile copy RECID=10 STAMP=1051677437 file name=/u01/recover/ORCLCDB/datafile/o1_mf_system_hpjsk4kh_.dbf
datafile 9 switched to datafile copy
input datafile copy RECID=11 STAMP=1051677437 file name=/u01/recover/ORCLCDB/8A34DEF16CD55C76E0530100007F040C/datafile/o1_mf_system_hpjsjcf8_.dbf
datafile 14 switched to datafile copy
input datafile copy RECID=12 STAMP=1051677437 file name=/u01/recover/ORCLCDB/datafile/o1_mf_undotbs2_hpjsk4m6_.dbf
datafile 15 switched to datafile copy
input datafile copy RECID=13 STAMP=1051677437 file name=/u01/recover/ORCLCDB/8A34DEF16CD55C76E0530100007F040C/datafile/o1_mf_undotbs2_hpjsjcfc_.dbf
datafile 3 switched to datafile copy
input datafile copy RECID=14 STAMP=1051677437 file name=/u01/recover/ORCLCDB/datafile/o1_mf_sysaux_hpjsk4m0_.dbf
datafile 10 switched to datafile copy
input datafile copy RECID=15 STAMP=1051677437 file name=/u01/recover/ORCLCDB/8A34DEF16CD55C76E0530100007F040C/datafile/o1_mf_sysaux_hpjsjcdb_.dbf
contents of Memory Script:
{
# set requested point in time
set until  scn 3647348;
# online the datafiles restored or switched
sql clone "alter database datafile  1 online";
sql clone 'ORCL' "alter database datafile 
 9 online";
sql clone "alter database datafile  14 online";
sql clone 'ORCL' "alter database datafile 
 15 online";
sql clone "alter database datafile  3 online";
sql clone 'ORCL' "alter database datafile 
 10 online";
# recover and open database read only
recover clone database tablespace  "SYSTEM", "ORCL":"SYSTEM", "UNDOTBS2", "ORCL":"UNDOTBS2", "SYSAUX", "ORCL":"SYSAUX";
sql clone 'alter database open read only';
}
executing Memory Script
executing command: SET until clause
sql statement: alter database datafile  1 online
sql statement: alter database datafile  9 online
sql statement: alter database datafile  14 online
sql statement: alter database datafile  15 online
sql statement: alter database datafile  3 online
sql statement: alter database datafile  10 online
Starting recover at 21-SEP-20
using channel ORA_AUX_DISK_1
starting media recovery
archived log for thread 1 with sequence 29 is already on disk as file /u01/app/oracle/fast_recovery_area/ORCLCDB/archivelog/2020_09_21/o1_mf_1_29_hpjs1brk_.arc
archived log for thread 1 with sequence 30 is already on disk as file /u01/app/oracle/fast_recovery_area/ORCLCDB/archivelog/2020_09_21/o1_mf_1_30_hpjshf2z_.arc
archived log file name=/u01/app/oracle/fast_recovery_area/ORCLCDB/archivelog/2020_09_21/o1_mf_1_29_hpjs1brk_.arc thread=1 sequence=29
archived log file name=/u01/app/oracle/fast_recovery_area/ORCLCDB/archivelog/2020_09_21/o1_mf_1_30_hpjshf2z_.arc thread=1 sequence=30
media recovery complete, elapsed time: 00:00:02
Finished recover at 21-SEP-20
sql statement: alter database open read only
contents of Memory Script:
{
sql clone 'alter pluggable database  ORCL open read only';
}
executing Memory Script
sql statement: alter pluggable database  ORCL open read only
contents of Memory Script:
{
   sql clone "create spfile from memory";
   shutdown clone immediate;
   startup clone nomount;
   sql clone "alter system set  control_files = 
  ''/u01/recover/ORCLCDB/controlfile/o1_mf_hpjsj4g3_.ctl'' comment=
 ''RMAN set'' scope=spfile";
   shutdown clone immediate;
   startup clone nomount;
# mount database
sql clone 'alter database mount clone database';
}
executing Memory Script
sql statement: create spfile from memory
database closed
database dismounted
Oracle instance shut down
connected to auxiliary database (not started)
Oracle instance started
Total System Global Area     838858664 bytes
Fixed Size                     9140136 bytes
Variable Size                243269632 bytes
Database Buffers             578813952 bytes
Redo Buffers                   7634944 bytes
sql statement: alter system set  control_files =   ''/u01/recover/ORCLCDB/controlfile/o1_mf_hpjsj4g3_.ctl'' comment= ''RMAN set'' scope=spfile
Oracle instance shut down
connected to auxiliary database (not started)
Oracle instance started
Total System Global Area     838858664 bytes
Fixed Size                     9140136 bytes
Variable Size                243269632 bytes
Database Buffers             578813952 bytes
Redo Buffers                   7634944 bytes
sql statement: alter database mount clone database
contents of Memory Script:
{
# set requested point in time
set until  scn 3647348;
# set destinations for recovery set and auxiliary set datafiles
set newname for datafile  12 to new;
# restore the tablespaces in the recovery set and the auxiliary set
restore clone datafile  12;
switch clone datafile all;
}
executing Memory Script
executing command: SET until clause
executing command: SET NEWNAME
Starting restore at 21-SEP-20
allocated channel: ORA_AUX_DISK_1
channel ORA_AUX_DISK_1: SID=203 device type=DISK
channel ORA_AUX_DISK_1: starting datafile backup set restore
channel ORA_AUX_DISK_1: specifying datafile(s) to restore from backup set
channel ORA_AUX_DISK_1: restoring datafile 00012 to /u01/recover/BMDF_PITR_ORCL_ORCLCDB/8A34DEF16CD55C76E0530100007F040C/datafile/o1_mf_users_%u_.dbf
channel ORA_AUX_DISK_1: reading from backup piece /u01/app/oracle/fast_recovery_area/ORCLCDB/8A34DEF16CD55C76E0530100007F040C/backupset/2020_09_21/o1_mf_nnndf_TAG20200921T042229_hpjrp65m_.bkp
channel ORA_AUX_DISK_1: piece handle=/u01/app/oracle/fast_recovery_area/ORCLCDB/8A34DEF16CD55C76E0530100007F040C/backupset/2020_09_21/o1_mf_nnndf_TAG20200921T042229_hpjrp65m_.bkp tag=TAG20200921T042229
channel ORA_AUX_DISK_1: restored backup piece 1
channel ORA_AUX_DISK_1: restore complete, elapsed time: 00:00:15
Finished restore at 21-SEP-20
datafile 12 switched to datafile copy
input datafile copy RECID=17 STAMP=1051677532 file name=/u01/recover/BMDF_PITR_ORCL_ORCLCDB/8A34DEF16CD55C76E0530100007F040C/datafile/o1_mf_users_hpjsndxv_.dbf
contents of Memory Script:
{
# set requested point in time
set until  scn 3647348;
# online the datafiles restored or switched
sql clone 'ORCL' "alter database datafile 
 12 online";
# recover and open resetlogs
recover clone database tablespace  "ORCL":"USERS", "SYSTEM", "ORCL":"SYSTEM", "UNDOTBS2", "ORCL":"UNDOTBS2", "SYSAUX", "ORCL":"SYSAUX" delete archivelog;
alter clone database open resetlogs;
}
executing Memory Script
executing command: SET until clause
sql statement: alter database datafile  12 online
Starting recover at 21-SEP-20
using channel ORA_AUX_DISK_1
starting media recovery
archived log for thread 1 with sequence 29 is already on disk as file /u01/app/oracle/fast_recovery_area/ORCLCDB/archivelog/2020_09_21/o1_mf_1_29_hpjs1brk_.arc
archived log for thread 1 with sequence 30 is already on disk as file /u01/app/oracle/fast_recovery_area/ORCLCDB/archivelog/2020_09_21/o1_mf_1_30_hpjshf2z_.arc
archived log file name=/u01/app/oracle/fast_recovery_area/ORCLCDB/archivelog/2020_09_21/o1_mf_1_29_hpjs1brk_.arc thread=1 sequence=29
archived log file name=/u01/app/oracle/fast_recovery_area/ORCLCDB/archivelog/2020_09_21/o1_mf_1_30_hpjshf2z_.arc thread=1 sequence=30
media recovery complete, elapsed time: 00:00:00
Finished recover at 21-SEP-20
database opened
contents of Memory Script:
{
sql clone 'alter pluggable database  ORCL open';
}
executing Memory Script
sql statement: alter pluggable database  ORCL open
contents of Memory Script:
{
# create directory for datapump import
sql 'ORCL' "create or replace directory 
TSPITR_DIROBJ_DPDIR as ''
/u01/recover''";
# create directory for datapump export
sql clone 'ORCL' "create or replace directory 
TSPITR_DIROBJ_DPDIR as ''
/u01/recover''";
}
executing Memory Script
sql statement: create or replace directory TSPITR_DIROBJ_DPDIR as ''/u01/recover''
sql statement: create or replace directory TSPITR_DIROBJ_DPDIR as ''/u01/recover''
Performing export of tables...
   EXPDP> Starting "SYS"."TSPITR_EXP_bmDF_eslD":  
   EXPDP> Processing object type TABLE_EXPORT/TABLE/TABLE_DATA
   EXPDP> Processing object type TABLE_EXPORT/TABLE/STATISTICS/TABLE_STATISTICS
   EXPDP> Processing object type TABLE_EXPORT/TABLE/STATISTICS/MARKER
   EXPDP> Processing object type TABLE_EXPORT/TABLE/TABLE
   EXPDP> . . exported "SCUTECH"."TA"                              688.7 KB   79002 rows
   EXPDP> Master table "SYS"."TSPITR_EXP_bmDF_eslD" successfully loaded/unloaded
   EXPDP> ******************************************************************************
   EXPDP> Dump file set for SYS.TSPITR_EXP_bmDF_eslD is:
   EXPDP>   /u01/recover/tspitr_bmDF_21348.dmp
   EXPDP> Job "SYS"."TSPITR_EXP_bmDF_eslD" successfully completed at Mon Sep 21 04:40:26 2020 elapsed 0 00:00:55
Export completed
contents of Memory Script:
{
# shutdown clone before import
shutdown clone abort
}
executing Memory Script
Oracle instance shut down
Performing import of tables...
   IMPDP> Master table "SYS"."TSPITR_IMP_bmDF_BBAp" successfully loaded/unloaded
   IMPDP> Starting "SYS"."TSPITR_IMP_bmDF_BBAp":  
   IMPDP> Processing object type TABLE_EXPORT/TABLE/TABLE
   IMPDP> Processing object type TABLE_EXPORT/TABLE/TABLE_DATA
   IMPDP> . . imported "SCUTECH"."TB"                              688.7 KB   79002 rows
   IMPDP> Processing object type TABLE_EXPORT/TABLE/STATISTICS/TABLE_STATISTICS
   IMPDP> Processing object type TABLE_EXPORT/TABLE/STATISTICS/MARKER
   IMPDP> Job "SYS"."TSPITR_IMP_bmDF_BBAp" successfully completed at Mon Sep 21 04:41:48 2020 elapsed 0 00:01:00
Import completed
Removing automatic instance
Automatic instance removed
auxiliary instance file /u01/recover/ORCLCDB/8A34DEF16CD55C76E0530100007F040C/datafile/o1_mf_temp_hpjsl4dy_.tmp deleted
auxiliary instance file /u01/recover/ORCLCDB/datafile/o1_mf_temp_hpjsl2m9_.tmp deleted
auxiliary instance file /u01/recover/BMDF_PITR_ORCL_ORCLCDB/onlinelog/o1_mf_3_hpjsnz14_.log deleted
auxiliary instance file /u01/recover/BMDF_PITR_ORCL_ORCLCDB/onlinelog/o1_mf_2_hpjsnz07_.log deleted
auxiliary instance file /u01/recover/BMDF_PITR_ORCL_ORCLCDB/onlinelog/o1_mf_1_hpjsnyym_.log deleted
auxiliary instance file /u01/recover/BMDF_PITR_ORCL_ORCLCDB/8A34DEF16CD55C76E0530100007F040C/datafile/o1_mf_users_hpjsndxv_.dbf deleted
auxiliary instance file /u01/recover/ORCLCDB/8A34DEF16CD55C76E0530100007F040C/datafile/o1_mf_sysaux_hpjsjcdb_.dbf deleted
auxiliary instance file /u01/recover/ORCLCDB/datafile/o1_mf_sysaux_hpjsk4m0_.dbf deleted
auxiliary instance file /u01/recover/ORCLCDB/8A34DEF16CD55C76E0530100007F040C/datafile/o1_mf_undotbs2_hpjsjcfc_.dbf deleted
auxiliary instance file /u01/recover/ORCLCDB/datafile/o1_mf_undotbs2_hpjsk4m6_.dbf deleted
auxiliary instance file /u01/recover/ORCLCDB/8A34DEF16CD55C76E0530100007F040C/datafile/o1_mf_system_hpjsjcf8_.dbf deleted
auxiliary instance file /u01/recover/ORCLCDB/datafile/o1_mf_system_hpjsk4kh_.dbf deleted
auxiliary instance file /u01/recover/ORCLCDB/controlfile/o1_mf_hpjsj4g3_.ctl deleted
auxiliary instance file tspitr_bmDF_21348.dmp deleted
Finished recover at 21-SEP-20


我们看到一个recover table命令执行了很多过程,大致分成

创建一下临时实例

恢复一个临时实例,只包括SYSTEM,UNDO,SYSAUX和表所在的表空间。

expdp导出表

impdp导入表

删除临时实例

这条命令的功能真强,执行了这么多步骤!

创建临时实例

我们看到在恢复的过程中启动了一个辅助的实例

[oracle@localhost ~]$ ps -ef|grep pmon
oracle   17228     1  0 03:41 ?        00:00:00 ora_pmon_orclcdb
oracle   21232     1  0 04:36 ?        00:00:00 ora_pmon_bmDF
oracle   21320 16131  0 04:36 pts/2    00:00:00 grep --color=auto pmon
[oracle@localhost ~]$ ll /u01/recover/
total 0
drwxr-x---. 6 oracle oinstall 98 Sep 21 04:36 ORCLCDB
[oracle@localhost ~]$ ll /u01/recover/ORCLCDB/
total 0
drwxr-x---. 3 oracle oinstall 22 Sep 21 04:36 8A34DEF16CD55C76E0530100007F040C
drwxr-x---. 2 oracle oinstall 33 Sep 21 04:36 controlfile
drwxr-x---. 2 oracle oinstall  6 Sep 21 04:36 datafile
drwxr-x---. 2 oracle oinstall  6 Sep 21 04:36 onlinelog

检查执行结果

oracle@localhost ~]$ sqlplus sys/oracle as sysdba
SQL*Plus: Release 19.0.0.0.0 - Production on Mon Sep 21 04:40:13 2020
Version 19.3.0.0.0
Copyright (c) 1982, 2019, Oracle.  All rights reserved.
Connected to:
Oracle Database 19c Enterprise Edition Release 19.0.0.0.0 - Production
Version 19.3.0.0.0
SQL> select count(*) from scutech.ta;
  COUNT(*)
----------
     79002
SQL> select count(*) from scutech.tb;
  COUNT(*)
----------
     79002


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